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Fick's diffusion

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Hi
I am trying to model water vapor diffusion thought polymer materials (as mulilayers configuration) and I am using the transport of diluted species interface. The concetration is indicated as model input, however I only have the vapor pressure on external boundaries.
is it possible on comsol to model fick's law with pressure as dependant variable rather than concentration ?
thanks for your help

1 Reply Last Post 2017年7月30日 GMT-4 02:50

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Posted: 7 years ago 2017年7月30日 GMT-4 02:50
You can use Henri's law to convert your vapor pressure to concentration: c = K*p.
You can use Henri's law to convert your vapor pressure to concentration: c = K*p.

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